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GS81282Z18GD-200 Datasheet(PDF) 1 Page - GSI Technology |
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GS81282Z18GD-200 Datasheet(HTML) 1 Page - GSI Technology |
1 / 35 page GS81282Z18/36(GB/GD) 144Mb Pipelined and Flow Through Synchronous NBT SRAM 400 MHz–200 MHz 2.5 V or 3.3 V VDD 2.5 V or 3.3 V I/O 119- & 165-Bump BGA Commercial Temp Industrial Temp Rev: 1.01 5/2017 1/34 © 2015, GSI Technology Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Features • NBT (No Bus Turn Around) functionality allows zero wait Read-Write-Read bus utilization; fully pin-compatible with both pipelined and flow through NtRAM™, NoBL™ and ZBT™ SRAMs • 2.5 V or 3.3 V +10%/–10% core power supply • 2.5 V or 3.3 V I/O supply • User-configurable Pipeline and Flow Through mode • ZQ mode pin for user-selectable high/low output drive • IEEE 1149.1 JTAG-compatible Boundary Scan • LBO pin for Linear or Interleave Burst mode • Pin-compatible with 4Mb, 9Mb, 18Mb, 36Mb, and 72Mb devices • Byte write operation (9-bit Bytes) • 3 chip enable signals for easy depth expansion • ZZ Pin for automatic power-down • RoHS-compliant 119- and 165-bump BGA packages Functional Description The GS81282Z18/36 is a 144Mbit Synchronous Static SRAM. GSI's NBT SRAMs, like ZBT, NtRAM, NoBL or other pipelined read/double late write or flow through read/single late write SRAMs, allow utilization of all available bus bandwidth by eliminating the need to insert deselect cycles when the device is switched from read to write cycles. Because it is a synchronous device, address, data inputs, and read/write control inputs are captured on the rising edge of the input clock. Burst order control (LBO) must be tied to a power rail for proper operation. Asynchronous inputs include the Sleep mode enable (ZZ) and Output Enable. Output Enable can be used to override the synchronous control of the output drivers and turn the RAM's output drivers off at any time. Write cycles are internally self-timed and initiated by the rising edge of the clock input. This feature eliminates complex off- chip write pulse generation required by asynchronous SRAMs and simplifies input signal timing. The GS81282Z18/36 may be configured by the user to operate in Pipeline or Flow Through mode. Operating as a pipelined synchronous device, in addition to the rising-edge-triggered registers that capture input signals, the device incorporates a rising edge triggered output register. For read cycles, pipelined SRAM output data is temporarily stored by the edge-triggered output register during the access cycle and then released to the output drivers at the next rising edge of clock. The GS81282Z18/362 is implemented with GSI's high performance CMOS technology and is available in a JEDEC- standard 119-bump or 165-bump BGA package. Parameter Synopsis -400 -333 -250 -200 Unit Pipeline 3-1-1-1 tKQ tCycle 2.5 2.5 2.5 3.0 2.5 4.0 3.0 5.0 ns ns Curr (x18) Curr (x32/x36) 610 690 530 600 430 470 360 400 mA mA Flow Through 2-1-1-1 tKQ tCycle 4.0 4.0 4.5 4.5 5.5 5.5 6.5 6.5 ns ns Curr (x18) Curr (x32/x36) 430 470 400 435 360 355 294 330 mA mA |
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